docs: def _check_listening_on_ports_list(ports):
      """Check that the ports list given are being listened to
  
      Returns a list of ports being listened to and a list of the
      booleans.
  
      @param ports: LIST or port numbers.
      @returns [(port_num, boolean), ...], [boolean]
      """
      ports_open = [port_has_listener('0.0.0.0', p) for p in ports]
      return zip(ports, ports_open), ports_open